From: Mel Gorman <mgorman@suse.de>
To: Mike Waychison <mikew@google.com>
Cc: Shaohua Li <shaohua.li@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Minchan Kim <minchan.kim@gmail.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Johannes Weiner <jweiner@redhat.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Hugh Dickens <hughd@google.com>, Greg Thelen <gthelen@google.com>
Subject: Re: [PATCH] mm: Fix kswapd livelock on single core, no preempt kernel
Date: Wed, 14 Dec 2011 12:20:41 +0000 [thread overview]
Message-ID: <20111214122041.GF3487@suse.de> (raw)
In-Reply-To: <CAGTjWtDvmLnNqUoddUCmLVSDN0HcOjtsuFbAs+MFy24JFX-P3g@mail.gmail.com>
On Tue, Dec 13, 2011 at 08:36:43PM -0800, Mike Waychison wrote:
> FYI, this was seen with a 2.6.39-based kernel with no-numa, no-memcg
> and swap-enabled.
>
If this is 2.6.39, can you try applying the commit
[f06590bd: mm: vmscan: correctly check if reclaimer should schedule during shrink_slab]
There have been a few fixes around kswapd hogging the CPU since 2.6.39.
--
Mel Gorman
SUSE Labs
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WARNING: multiple messages have this Message-ID (diff)
From: Mel Gorman <mgorman@suse.de>
To: Mike Waychison <mikew@google.com>
Cc: Shaohua Li <shaohua.li@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Minchan Kim <minchan.kim@gmail.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Johannes Weiner <jweiner@redhat.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Hugh Dickens <hughd@google.com>, Greg Thelen <gthelen@google.com>
Subject: Re: [PATCH] mm: Fix kswapd livelock on single core, no preempt kernel
Date: Wed, 14 Dec 2011 12:20:41 +0000 [thread overview]
Message-ID: <20111214122041.GF3487@suse.de> (raw)
In-Reply-To: <CAGTjWtDvmLnNqUoddUCmLVSDN0HcOjtsuFbAs+MFy24JFX-P3g@mail.gmail.com>
On Tue, Dec 13, 2011 at 08:36:43PM -0800, Mike Waychison wrote:
> FYI, this was seen with a 2.6.39-based kernel with no-numa, no-memcg
> and swap-enabled.
>
If this is 2.6.39, can you try applying the commit
[f06590bd: mm: vmscan: correctly check if reclaimer should schedule during shrink_slab]
There have been a few fixes around kswapd hogging the CPU since 2.6.39.
--
Mel Gorman
SUSE Labs
next prev parent reply other threads:[~2011-12-14 12:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-13 17:44 [PATCH] mm: Fix kswapd livelock on single core, no preempt kernel Mike Waychison
2011-12-13 17:44 ` Mike Waychison
2011-12-14 2:24 ` Shaohua Li
2011-12-14 2:24 ` Shaohua Li
2011-12-14 4:36 ` Mike Waychison
2011-12-14 4:36 ` Mike Waychison
2011-12-14 4:45 ` Mike Waychison
2011-12-14 4:45 ` Mike Waychison
2011-12-15 1:06 ` Shaohua Li
2011-12-15 1:06 ` Shaohua Li
2011-12-14 12:20 ` Mel Gorman [this message]
2011-12-14 12:20 ` Mel Gorman
2011-12-14 15:37 ` Mike Waychison
2011-12-14 15:37 ` Mike Waychison
2011-12-14 10:51 ` James Bottomley
2011-12-14 10:51 ` James Bottomley
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